This large brittlestar can be found in rockpools around much of the UK, but be gentle - its arms are very brittle and will break off if disturbed.

This clown-like fish is a favourite amongst divers and snorkellers. They are inquisitive little souls and will investigate divers near their hidey-hole homes.

Look out for the feathery leaves of Spiked water-milfoil just below the surface of streams, ditches, lakes and ponds; its red flowers emerge from the water in summer. It provides shelter for a…

A pretty, little gull, the kittiwake can be spotted nesting in colonies on clifftops and rock ledges around the UK's coast. It spends the winter out at sea.

Despite its name, Ground-ivy is actually a member of the dead-nettle family. It is a clump-forming, aromatic plant that likes woodlands, hedgerows and damp places.

The European larch was introduced into the UK from Central Europe in the 17th century. Unusually for a conifer, it is deciduous and displays small, greeny-red cones on brittle twigs.

The shanny is a common sight in rockpools all around the UK. They are feisty little fish and have been known to bite when caught, so watch your fingers!

A pretty and distinctive little waterbird, the mandarin duck was introduced from the Far East as its name suggests. Oddly for a duck, it nests in trees, sometimes high above the water.

The small blue's name is a little misleading: it is our smallest butterfly, but only shows a dusting of blue on brown wings. It is scarce, occurring on chalk grassland, mostly in southern…